The software allows you to make lists with packs. It will download and delete according to the selection.This is still V2 so there might verry well be bugs, please let me know

One of the cool features is making lists, say if you are playing online you can prepare a list, have a friend install it. That way yuo can be sure you have the same songs availible. You can even configure your system to use "Open With" for the application.